Finding the Fourth Proportional to 19,876, 29,815.04 and 5,085.05

Step by Step Solution

1. Step 1: Write the proportion equation
   19,876 : 29,815.04 = 5,085.05 : x
2. Step 2: Convert to fraction form
   19,876/29,815.04 = 5,085.05/x
3. Step 3: Cross multiply
   19,876x = 29,815.04 × 5,085.05
4. Step 4: Simplify right side
   19,876x = 151,610,969.15
5. Step 5: Solve for x
   x = 151,610,969.15/19,876
6. Step 6: Final answer
   x = 7,627.84